I wanna do pre-med but I don't know how...

I'll be a freshman this Fall and I really want to pursue pre-med. I'm an international student and so I need to go to med school (if I can reach that stage, that is) right after undergrad, w/o taking a gap year, due to visa issues. So my question is, is that possible if I take my MCAT in the summer after my junior year and then apply for med school? If yes, then will I be inexperienced (since I won't have that many ECAs under my belt) and not mature enough (I'll be 22 at the end of... I wanna do pre-med but I don't know how...
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pre-Medical - MD Source Type: forums